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8种杀虫剂对烟蚜和龟纹瓢虫的毒力测定和田间试验表明 :吡虫啉对龟纹瓢虫和烟蚜的选择性最高 ,对瓢虫安全 ,且防治效果好 ,其次是抗蚜威和唑蚜威的选择性较高 ;另外 ,硫丹对龟纹瓢虫也具有一定的选择性 ;而灭多威、敌敌畏、杀灭菊酯、氧化乐果对龟纹瓢虫不具选择保护作用 ,在防治烟蚜的同时也会大量伤害瓢虫。
The toxicity of 8 kinds of insecticides to Myzus persicae and Propylaea japonica and their field tests showed that imidacloprid had the highest selectivity to Propylaea japonica and Myzus persicae and was safe to ladybug and had good control effect, In addition, endosulfan has certain selectivity to Propylaea japonica; and methomyl, dichlorvos, fenvalerate, omethoate doxoprofen insecticide have no choice protection Role in the prevention and control of tobacco aphids will also be a lot of damage ladybug.